Tap the "DT 360" icon and launch the app.
Tap the "Live at Luna Park 360" button.
Tap song you want to download for free.
Enter your App Store account password.
Confirm your FREE purchase...
...and wait for the necessary files to download...
... once the download is complete tap the song to watch it!.
If at any point you want to delete a song or cancel a download just swipe the song...
...and tap the delete button.